lubbock_machdep.c revision 1.17.10.3
1 /* $NetBSD: lubbock_machdep.c,v 1.17.10.3 2009/08/19 18:46:08 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003, 2005 Genetec Corporation. All rights reserved. 5 * Written by Hiroyuki Bessho for Genetec Corporation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of Genetec Corporation may not be used to endorse or 16 * promote products derived from this software without specific prior 17 * written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Machine dependant functions for kernel setup for 32 * Intel DBPXA250 evaluation board (a.k.a. Lubbock). 33 * Based on iq80310_machhdep.c 34 */ 35 /* 36 * Copyright (c) 2001 Wasabi Systems, Inc. 37 * All rights reserved. 38 * 39 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed for the NetBSD Project by 52 * Wasabi Systems, Inc. 53 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 54 * or promote products derived from this software without specific prior 55 * written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 67 * POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * Copyright (c) 1997,1998 Mark Brinicombe. 72 * Copyright (c) 1997,1998 Causality Limited. 73 * All rights reserved. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. All advertising materials mentioning features or use of this software 84 * must display the following acknowledgement: 85 * This product includes software developed by Mark Brinicombe 86 * for the NetBSD Project. 87 * 4. The name of the company nor the name of the author may be used to 88 * endorse or promote products derived from this software without specific 89 * prior written permission. 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 92 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 93 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 94 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 95 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 96 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 97 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 98 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 99 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 100 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 101 * SUCH DAMAGE. 102 * 103 * Machine dependant functions for kernel setup for Intel IQ80310 evaluation 104 * boards using RedBoot firmware. 105 */ 106 107 /* 108 * DIP switches: 109 * 110 * S19: no-dot: set RB_KDB. enter kgdb session. 111 * S20: no-dot: set RB_SINGLE. don't go multi user mode. 112 */ 113 114 #include <sys/cdefs.h> 115 __KERNEL_RCSID(0, "$NetBSD: lubbock_machdep.c,v 1.17.10.3 2009/08/19 18:46:08 yamt Exp $"); 116 117 #include "opt_ddb.h" 118 #include "opt_kgdb.h" 119 #include "opt_pmap_debug.h" 120 #include "opt_md.h" 121 #include "opt_com.h" 122 #include "md.h" 123 #include "lcd.h" 124 125 #include <sys/param.h> 126 #include <sys/device.h> 127 #include <sys/systm.h> 128 #include <sys/kernel.h> 129 #include <sys/exec.h> 130 #include <sys/proc.h> 131 #include <sys/msgbuf.h> 132 #include <sys/reboot.h> 133 #include <sys/termios.h> 134 #include <sys/ksyms.h> 135 136 #include <uvm/uvm_extern.h> 137 138 #include <sys/conf.h> 139 #include <dev/cons.h> 140 #include <dev/md.h> 141 #include <dev/ic/smc91cxxreg.h> 142 143 #include <machine/db_machdep.h> 144 #include <ddb/db_sym.h> 145 #include <ddb/db_extern.h> 146 #ifdef KGDB 147 #include <sys/kgdb.h> 148 #endif 149 150 #include <machine/bootconfig.h> 151 #include <machine/bus.h> 152 #include <machine/cpu.h> 153 #include <machine/frame.h> 154 #include <arm/undefined.h> 155 156 #include <arm/arm32/machdep.h> 157 158 #include <arm/xscale/pxa2x0reg.h> 159 #include <arm/xscale/pxa2x0var.h> 160 #include <arm/xscale/pxa2x0_gpio.h> 161 #include <arm/sa11x0/sa1111_reg.h> 162 #include <evbarm/lubbock/lubbock_reg.h> 163 #include <evbarm/lubbock/lubbock_var.h> 164 165 /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 166 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 167 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 168 169 /* 170 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 171 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 172 */ 173 #define KERNEL_VM_SIZE 0x0C000000 174 175 176 /* 177 * Address to call from cpu_reset() to reset the machine. 178 * This is machine architecture dependant as it varies depending 179 * on where the ROM appears when you turn the MMU off. 180 */ 181 182 u_int cpu_reset_address = 0; 183 184 /* Define various stack sizes in pages */ 185 #define IRQ_STACK_SIZE 1 186 #define ABT_STACK_SIZE 1 187 #define UND_STACK_SIZE 1 188 189 BootConfig bootconfig; /* Boot config storage */ 190 char *boot_args = NULL; 191 char *boot_file = NULL; 192 193 vm_offset_t physical_start; 194 vm_offset_t physical_freestart; 195 vm_offset_t physical_freeend; 196 vm_offset_t physical_end; 197 u_int free_pages; 198 vm_offset_t pagetables_start; 199 200 /*int debug_flags;*/ 201 #ifndef PMAP_STATIC_L1S 202 int max_processes = 64; /* Default number */ 203 #endif /* !PMAP_STATIC_L1S */ 204 205 /* Physical and virtual addresses for some global pages */ 206 pv_addr_t systempage; 207 pv_addr_t irqstack; 208 pv_addr_t undstack; 209 pv_addr_t abtstack; 210 pv_addr_t kernelstack; 211 pv_addr_t minidataclean; 212 213 vm_offset_t msgbufphys; 214 215 extern u_int data_abort_handler_address; 216 extern u_int prefetch_abort_handler_address; 217 extern u_int undefined_handler_address; 218 219 #ifdef PMAP_DEBUG 220 extern int pmap_debug_level; 221 #endif 222 223 #define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 224 #define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */ 225 #define KERNEL_PT_KERNEL_NUM 4 226 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM) 227 /* Page tables for mapping kernel VM */ 228 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 229 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 230 231 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 232 233 struct user *proc0paddr; 234 235 /* Prototypes */ 236 237 #if 0 238 void process_kernel_args(char *); 239 #endif 240 241 void consinit(void); 242 void kgdb_port_init(void); 243 void change_clock(uint32_t v); 244 245 bs_protos(bs_notimpl); 246 247 #include "com.h" 248 #if NCOM > 0 249 #include <dev/ic/comreg.h> 250 #include <dev/ic/comvar.h> 251 #endif 252 253 #ifndef CONSPEED 254 #define CONSPEED B115200 /* What RedBoot uses */ 255 #endif 256 #ifndef CONMODE 257 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 258 #endif 259 260 int comcnspeed = CONSPEED; 261 int comcnmode = CONMODE; 262 263 static struct pxa2x0_gpioconf boarddep_gpioconf[] = { 264 { 44, GPIO_ALT_FN_1_IN }, /* BTCST */ 265 { 45, GPIO_ALT_FN_2_OUT }, /* BTRST */ 266 267 { 29, GPIO_ALT_FN_1_IN }, /* SDATA_IN0 */ 268 269 { -1 } 270 }; 271 static struct pxa2x0_gpioconf *lubbock_gpioconf[] = { 272 pxa25x_com_btuart_gpioconf, 273 pxa25x_com_ffuart_gpioconf, 274 #if 0 275 pxa25x_com_stuart_gpioconf, 276 #endif 277 pxa25x_pcic_gpioconf, 278 pxa25x_pxaacu_gpioconf, 279 boarddep_gpioconf, 280 NULL 281 }; 282 283 /* 284 * void cpu_reboot(int howto, char *bootstr) 285 * 286 * Reboots the system 287 * 288 * Deal with any syncing, unmounting, dumping and shutdown hooks, 289 * then reset the CPU. 290 */ 291 void 292 cpu_reboot(int howto, char *bootstr) 293 { 294 #ifdef DIAGNOSTIC 295 /* info */ 296 printf("boot: howto=%08x curproc=%p\n", howto, curproc); 297 #endif 298 299 /* 300 * If we are still cold then hit the air brakes 301 * and crash to earth fast 302 */ 303 if (cold) { 304 doshutdownhooks(); 305 pmf_system_shutdown(boothowto); 306 printf("The operating system has halted.\n"); 307 printf("Please press any key to reboot.\n\n"); 308 cngetc(); 309 printf("rebooting...\n"); 310 cpu_reset(); 311 /*NOTREACHED*/ 312 } 313 314 /* Disable console buffering */ 315 /* cnpollc(1);*/ 316 317 /* 318 * If RB_NOSYNC was not specified sync the discs. 319 * Note: Unless cold is set to 1 here, syslogd will die during the 320 * unmount. It looks like syslogd is getting woken up only to find 321 * that it cannot page part of the binary in as the filesystem has 322 * been unmounted. 323 */ 324 if (!(howto & RB_NOSYNC)) 325 bootsync(); 326 327 /* Say NO to interrupts */ 328 splhigh(); 329 330 /* Do a dump if requested. */ 331 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 332 dumpsys(); 333 334 /* Run any shutdown hooks */ 335 doshutdownhooks(); 336 337 pmf_system_shutdown(boothowto); 338 339 /* Make sure IRQ's are disabled */ 340 IRQdisable; 341 342 if (howto & RB_HALT) { 343 printf("The operating system has halted.\n"); 344 printf("Please press any key to reboot.\n\n"); 345 cngetc(); 346 } 347 348 printf("rebooting...\n"); 349 cpu_reset(); 350 /*NOTREACHED*/ 351 } 352 353 static inline 354 pd_entry_t * 355 read_ttb(void) 356 { 357 long ttb; 358 359 __asm volatile("mrc p15, 0, %0, c2, c0, 0" : "=r" (ttb)); 360 361 362 return (pd_entry_t *)(ttb & ~((1<<14)-1)); 363 } 364 365 /* 366 * Static device mappings. These peripheral registers are mapped at 367 * fixed virtual addresses very early in initarm() so that we can use 368 * them while booting the kernel, and stay at the same address 369 * throughout whole kernel's life time. 370 * 371 * We use this table twice; once with bootstrap page table, and once 372 * with kernel's page table which we build up in initarm(). 373 * 374 * Since we map these registers into the bootstrap page table using 375 * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map 376 * registers segment-aligned and segment-rounded in order to avoid 377 * using the 2nd page tables. 378 */ 379 380 #define _A(a) ((a) & ~L1_S_OFFSET) 381 #define _S(s) (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1)) 382 383 static const struct pmap_devmap lubbock_devmap[] = { 384 { 385 LUBBOCK_OBIO_VBASE, 386 _A(LUBBOCK_OBIO_PBASE), 387 _S(LUBBOCK_OBIO_SIZE), 388 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 389 }, 390 { 391 LUBBOCK_GPIO_VBASE, 392 _A(PXA2X0_GPIO_BASE), 393 _S(PXA250_GPIO_SIZE), 394 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 395 }, 396 { 397 LUBBOCK_CLKMAN_VBASE, 398 _A(PXA2X0_CLKMAN_BASE), 399 _S(PXA2X0_CLKMAN_SIZE), 400 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 401 }, 402 { 403 LUBBOCK_INTCTL_VBASE, 404 _A(PXA2X0_INTCTL_BASE), 405 _S(PXA2X0_INTCTL_SIZE), 406 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 407 }, 408 { 409 LUBBOCK_FFUART_VBASE, 410 _A(PXA2X0_FFUART_BASE), 411 _S(4 * COM_NPORTS), 412 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 413 }, 414 { 415 LUBBOCK_BTUART_VBASE, 416 _A(PXA2X0_BTUART_BASE), 417 _S(4 * COM_NPORTS), 418 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 419 }, 420 421 {0, 0, 0, 0,} 422 }; 423 424 #undef _A 425 #undef _S 426 427 /* 428 * u_int initarm(...) 429 * 430 * Initial entry point on startup. This gets called before main() is 431 * entered. 432 * It should be responsible for setting up everything that must be 433 * in place when main is called. 434 * This includes 435 * Taking a copy of the boot configuration structure. 436 * Initialising the physical console so characters can be printed. 437 * Setting up page tables for the kernel 438 * Relocating the kernel to the bottom of physical memory 439 */ 440 u_int 441 initarm(void *arg) 442 { 443 extern vaddr_t xscale_cache_clean_addr; 444 int loop; 445 int loop1; 446 u_int l1pagetable; 447 paddr_t memstart; 448 psize_t memsize; 449 int led_data = 0; 450 #ifdef DIAGNOSTIC 451 extern vsize_t xscale_minidata_clean_size; /* used in KASSERT */ 452 #endif 453 #define LEDSTEP_P() ioreg_write(LUBBOCK_OBIO_PBASE+LUBBOCK_HEXLED, led_data++) 454 #define LEDSTEP() hex_led(led_data++) 455 456 /* use physical address until pagetable is set */ 457 LEDSTEP_P(); 458 459 /* map some peripheral registers at static I/O area */ 460 pmap_devmap_bootstrap((vaddr_t)read_ttb(), lubbock_devmap); 461 462 LEDSTEP_P(); 463 464 /* start 32.768 kHz OSC */ 465 ioreg_write(LUBBOCK_CLKMAN_VBASE + 0x08, 2); 466 /* Get ready for splfoo() */ 467 pxa2x0_intr_bootstrap(LUBBOCK_INTCTL_VBASE); 468 469 LEDSTEP(); 470 471 /* 472 * Heads up ... Setup the CPU / MMU / TLB functions 473 */ 474 if (set_cpufuncs()) 475 panic("cpu not recognized!"); 476 477 LEDSTEP(); 478 479 480 #if 0 481 /* Calibrate the delay loop. */ 482 #endif 483 484 /* 485 * Okay, RedBoot has provided us with the following memory map: 486 * 487 * Physical Address Range Description 488 * ----------------------- ---------------------------------- 489 * 0x00000000 - 0x01ffffff flash Memory (32MB) 490 * 0x04000000 - 0x05ffffff Application flash Memory (32MB) 491 * 0x08000000 - 0x080000ff I/O baseboard registers 492 * 0x0a000000 - 0x0a0fffff SRAM (1MB) 493 * 0x0c000000 - 0x0c0fffff Ethernet Controller 494 * 0x0e000000 - 0x0e0fffff Ethernet Controller (Attribute) 495 * 0x10000000 - 0x103fffff SA-1111 Companion Chip 496 * 0x14000000 - 0x17ffffff Expansion Card (64MB) 497 * 0x40000000 - 0x480fffff Processor Registers 498 * 0xa0000000 - 0xa3ffffff SDRAM Bank 0 (64MB) 499 * 500 * 501 * Virtual Address Range X C B Description 502 * ----------------------- - - - ---------------------------------- 503 * 0x00000000 - 0x00003fff N Y Y SDRAM 504 * 0x00004000 - 0x000fffff N Y N Boot ROM 505 * 0x00100000 - 0x01ffffff N N N Application Flash 506 * 0x04000000 - 0x05ffffff N N N Exp Application Flash 507 * 0x08000000 - 0x080fffff N N N I/O baseboard registers 508 * 0x0a000000 - 0x0a0fffff N N N SRAM 509 * 0x40000000 - 0x480fffff N N N Processor Registers 510 * 0xa0000000 - 0xa000ffff N Y N RedBoot SDRAM 511 * 0xa0017000 - 0xa3ffffff Y Y Y SDRAM 512 * 0xc0000000 - 0xcfffffff Y Y Y Cache Flush Region 513 * (done by this routine) 514 * 0xfd000000 - 0xfd0000ff N N N I/O baseboard registers 515 * 0xfd100000 - 0xfd3fffff N N N Processor Registers. 516 * 0xfd400000 - 0xfd4fffff N N N FF-UART 517 * 0xfd500000 - 0xfd5fffff N N N BT-UART 518 * 519 * RedBoot's first level page table is at 0xa0004000. There 520 * are also 2 second-level tables at 0xa0008000 and 521 * 0xa0008400. We will continue to use them until we switch to 522 * our pagetable by setttb(). 523 * 524 */ 525 526 /* setup GPIO for BTUART, in case bootloader doesn't take care of it */ 527 pxa2x0_gpio_bootstrap(LUBBOCK_GPIO_VBASE); 528 pxa2x0_gpio_config(lubbock_gpioconf); 529 530 /* turn on clock to UART block. 531 XXX: this should not be done here. */ 532 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, CKEN_FFUART|CKEN_BTUART | 533 ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN)); 534 535 LEDSTEP(); 536 537 consinit(); 538 LEDSTEP(); 539 #ifdef KGDB 540 kgdb_port_init(); 541 LEDSTEP(); 542 #endif 543 544 545 /* Talk to the user */ 546 printf("\nNetBSD/evbarm (lubbock) booting ...\n"); 547 548 /* Tweak memory controller */ 549 { 550 /* Modify access timing for CS3 (91c96) */ 551 552 uint32_t tmp = 553 ioreg_read(PXA2X0_MEMCTL_BASE+MEMCTL_MSC1); 554 ioreg_write(PXA2X0_MEMCTL_BASE+MEMCTL_MSC1, 555 (tmp & 0xffff) | (0x3881<<16)); 556 /* RRR=3, RDN=8, RDF=8 557 * XXX: can be faster? 558 */ 559 } 560 561 562 /* Initialize for PCMCIA/CF sockets */ 563 { 564 uint32_t tmp; 565 566 /* Activate two sockets. 567 XXX: This code segment should be moved to 568 pcmcia MD attach routine. 569 XXX: These bits should be toggled based on 570 existene of PCMCIA/CF cards 571 */ 572 ioreg_write(PXA2X0_MEMCTL_BASE+MEMCTL_MECR, 573 MECR_NOS|MECR_CIT); 574 575 tmp = ioreg_read(LUBBOCK_SACC_PBASE+SACCSBI_SKCR); 576 ioreg_write(LUBBOCK_SACC_PBASE+SACCSBI_SKCR, 577 (tmp & ~(1<<4)) | (1<<0)); 578 } 579 580 #if 0 581 /* 582 * Examine the boot args string for options we need to know about 583 * now. 584 */ 585 process_kernel_args((char *)nwbootinfo.bt_args); 586 #endif 587 588 { 589 int processor_card_id; 590 591 processor_card_id = 0x000f & 592 ioreg_read(LUBBOCK_OBIO_VBASE+LUBBOCK_MISCRD); 593 switch(processor_card_id){ 594 case 0: 595 /* Cotulla */ 596 memstart = 0xa0000000; 597 memsize = 0x04000000; /* 64MB */ 598 break; 599 case 1: 600 /* XXX: Sabiani */ 601 memstart = 0xa0000000; 602 memsize = 0x04000000; /* 64MB */ 603 break; 604 default: 605 /* XXX: Unknown */ 606 memstart = 0xa0000000; 607 memsize = 0x04000000; /* 64MB */ 608 } 609 } 610 611 printf("initarm: Configuring system ...\n"); 612 613 /* Fake bootconfig structure for the benefit of pmap.c */ 614 /* XXX must make the memory description h/w independent */ 615 bootconfig.dramblocks = 1; 616 bootconfig.dram[0].address = memstart; 617 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 618 619 /* 620 * Set up the variables that define the availablilty of 621 * physical memory. For now, we're going to set 622 * physical_freestart to 0xa0200000 (where the kernel 623 * was loaded), and allocate the memory we need downwards. 624 * If we get too close to the page tables that RedBoot 625 * set up, we will panic. We will update physical_freestart 626 * and physical_freeend later to reflect what pmap_bootstrap() 627 * wants to see. 628 * 629 * XXX pmap_bootstrap() needs an enema. 630 */ 631 physical_start = bootconfig.dram[0].address; 632 physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE); 633 634 physical_freestart = 0xa0009000UL; 635 physical_freeend = 0xa0200000UL; 636 637 physmem = (physical_end - physical_start) / PAGE_SIZE; 638 639 #ifdef VERBOSE_INIT_ARM 640 /* Tell the user about the memory */ 641 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 642 physical_start, physical_end - 1); 643 #endif 644 645 /* 646 * Okay, the kernel starts 2MB in from the bottom of physical 647 * memory. We are going to allocate our bootstrap pages downwards 648 * from there. 649 * 650 * We need to allocate some fixed page tables to get the kernel 651 * going. We allocate one page directory and a number of page 652 * tables and store the physical addresses in the kernel_pt_table 653 * array. 654 * 655 * The kernel page directory must be on a 16K boundary. The page 656 * tables must be on 4K boundaries. What we do is allocate the 657 * page directory on the first 16K boundary that we encounter, and 658 * the page tables on 4K boundaries otherwise. Since we allocate 659 * at least 3 L2 page tables, we are guaranteed to encounter at 660 * least one 16K aligned region. 661 */ 662 663 #ifdef VERBOSE_INIT_ARM 664 printf("Allocating page tables\n"); 665 #endif 666 667 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 668 669 #ifdef VERBOSE_INIT_ARM 670 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 671 physical_freestart, free_pages, free_pages); 672 #endif 673 674 /* Define a macro to simplify memory allocation */ 675 #define valloc_pages(var, np) \ 676 alloc_pages((var).pv_pa, (np)); \ 677 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 678 679 #define alloc_pages(var, np) \ 680 physical_freeend -= ((np) * PAGE_SIZE); \ 681 if (physical_freeend < physical_freestart) \ 682 panic("initarm: out of memory"); \ 683 (var) = physical_freeend; \ 684 free_pages -= (np); \ 685 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 686 687 loop1 = 0; 688 kernel_l1pt.pv_pa = 0; 689 kernel_l1pt.pv_va = 0; 690 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 691 /* Are we 16KB aligned for an L1 ? */ 692 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 693 && kernel_l1pt.pv_pa == 0) { 694 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 695 } else { 696 valloc_pages(kernel_pt_table[loop1], 697 L2_TABLE_SIZE / PAGE_SIZE); 698 ++loop1; 699 } 700 } 701 702 /* This should never be able to happen but better confirm that. */ 703 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 704 panic("initarm: Failed to align the kernel page directory"); 705 706 LEDSTEP(); 707 708 /* 709 * Allocate a page for the system page mapped to V0x00000000 710 * This page will just contain the system vectors and can be 711 * shared by all processes. 712 */ 713 alloc_pages(systempage.pv_pa, 1); 714 715 /* Allocate stacks for all modes */ 716 valloc_pages(irqstack, IRQ_STACK_SIZE); 717 valloc_pages(abtstack, ABT_STACK_SIZE); 718 valloc_pages(undstack, UND_STACK_SIZE); 719 valloc_pages(kernelstack, UPAGES); 720 721 /* Allocate enough pages for cleaning the Mini-Data cache. */ 722 KASSERT(xscale_minidata_clean_size <= PAGE_SIZE); 723 valloc_pages(minidataclean, 1); 724 725 #ifdef VERBOSE_INIT_ARM 726 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 727 irqstack.pv_va); 728 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 729 abtstack.pv_va); 730 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 731 undstack.pv_va); 732 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 733 kernelstack.pv_va); 734 #endif 735 736 /* 737 * XXX Defer this to later so that we can reclaim the memory 738 * XXX used by the RedBoot page tables. 739 */ 740 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 741 742 /* 743 * Ok we have allocated physical pages for the primary kernel 744 * page tables 745 */ 746 747 #ifdef VERBOSE_INIT_ARM 748 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 749 #endif 750 751 /* 752 * Now we start construction of the L1 page table 753 * We start by mapping the L2 page tables into the L1. 754 * This means that we can replace L1 mappings later on if necessary 755 */ 756 l1pagetable = kernel_l1pt.pv_pa; 757 758 /* Map the L2 pages tables in the L1 page table */ 759 pmap_link_l2pt(l1pagetable, 0x00000000, 760 &kernel_pt_table[KERNEL_PT_SYS]); 761 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 762 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 763 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 764 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 765 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 766 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 767 768 /* update the top of the kernel VM */ 769 pmap_curmaxkvaddr = 770 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 771 772 #ifdef VERBOSE_INIT_ARM 773 printf("Mapping kernel\n"); 774 #endif 775 776 /* Now we fill in the L2 pagetable for the kernel static code/data */ 777 { 778 extern char etext[], _end[]; 779 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 780 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 781 u_int logical; 782 783 textsize = (textsize + PGOFSET) & ~PGOFSET; 784 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 785 786 logical = 0x00200000; /* offset of kernel in RAM */ 787 788 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 789 physical_start + logical, textsize, 790 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 791 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 792 physical_start + logical, totalsize - textsize, 793 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 794 } 795 796 #ifdef VERBOSE_INIT_ARM 797 printf("Constructing L2 page tables\n"); 798 #endif 799 800 /* Map the stack pages */ 801 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 802 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 803 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 804 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 805 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 806 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 807 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 808 UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE); 809 810 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 811 L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE); 812 813 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 814 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 815 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 816 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 817 } 818 819 /* Map the Mini-Data cache clean area. */ 820 xscale_setup_minidata(l1pagetable, minidataclean.pv_va, 821 minidataclean.pv_pa); 822 823 /* Map the vector page. */ 824 #if 1 825 /* MULTI-ICE requires that page 0 is NC/NB so that it can download the 826 * cache-clean code there. */ 827 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 828 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE); 829 #else 830 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 831 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 832 #endif 833 834 /* 835 * map integrated peripherals at same address in l1pagetable 836 * so that we can continue to use console. 837 */ 838 pmap_devmap_bootstrap(l1pagetable, lubbock_devmap); 839 840 /* 841 * Give the XScale global cache clean code an appropriately 842 * sized chunk of unmapped VA space starting at 0xff000000 843 * (our device mappings end before this address). 844 */ 845 xscale_cache_clean_addr = 0xff000000U; 846 847 /* 848 * Now we have the real page tables in place so we can switch to them. 849 * Once this is done we will be running with the REAL kernel page 850 * tables. 851 */ 852 853 /* 854 * Update the physical_freestart/physical_freeend/free_pages 855 * variables. 856 */ 857 { 858 extern char _end[]; 859 860 physical_freestart = physical_start + 861 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 862 KERNEL_BASE); 863 physical_freeend = physical_end; 864 free_pages = 865 (physical_freeend - physical_freestart) / PAGE_SIZE; 866 } 867 868 /* Switch tables */ 869 #ifdef VERBOSE_INIT_ARM 870 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 871 physical_freestart, free_pages, free_pages); 872 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 873 #endif 874 875 LEDSTEP(); 876 877 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 878 setttb(kernel_l1pt.pv_pa); 879 cpu_tlb_flushID(); 880 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 881 LEDSTEP(); 882 883 /* 884 * Moved from cpu_startup() as data_abort_handler() references 885 * this during uvm init 886 */ 887 proc0paddr = (struct user *)kernelstack.pv_va; 888 lwp0.l_addr = proc0paddr; 889 890 #ifdef VERBOSE_INIT_ARM 891 printf("bootstrap done.\n"); 892 #endif 893 894 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 895 896 /* 897 * Pages were allocated during the secondary bootstrap for the 898 * stacks for different CPU modes. 899 * We must now set the r13 registers in the different CPU modes to 900 * point to these stacks. 901 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 902 * of the stack memory. 903 */ 904 printf("init subsystems: stacks "); 905 906 set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 907 set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 908 set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 909 910 /* 911 * Well we should set a data abort handler. 912 * Once things get going this will change as we will need a proper 913 * handler. 914 * Until then we will use a handler that just panics but tells us 915 * why. 916 * Initialisation of the vectors will just panic on a data abort. 917 * This just fills in a slightly better one. 918 */ 919 printf("vectors "); 920 data_abort_handler_address = (u_int)data_abort_handler; 921 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 922 undefined_handler_address = (u_int)undefinedinstruction_bounce; 923 924 /* Initialise the undefined instruction handlers */ 925 printf("undefined "); 926 undefined_init(); 927 928 /* Load memory into UVM. */ 929 printf("page "); 930 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 931 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 932 atop(physical_freestart), atop(physical_freeend), 933 VM_FREELIST_DEFAULT); 934 935 /* Boot strap pmap telling it where the kernel page table is */ 936 printf("pmap "); 937 LEDSTEP(); 938 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 939 LEDSTEP(); 940 941 #ifdef __HAVE_MEMORY_DISK__ 942 md_root_setconf(memory_disk, sizeof memory_disk); 943 #endif 944 945 { 946 uint16_t sw = ioreg16_read(LUBBOCK_OBIO_VBASE+LUBBOCK_USERSW); 947 948 if (0 == (sw & (1<<13))) /* check S19 */ 949 boothowto |= RB_KDB; 950 if (0 == (sw & (1<<12))) /* S20 */ 951 boothowto |= RB_SINGLE; 952 } 953 954 LEDSTEP(); 955 956 #ifdef KGDB 957 if (boothowto & RB_KDB) { 958 kgdb_debug_init = 1; 959 kgdb_connect(1); 960 } 961 #endif 962 963 #ifdef DDB 964 db_machine_init(); 965 966 /* Firmware doesn't load symbols. */ 967 ddb_init(0, NULL, NULL); 968 969 if (boothowto & RB_KDB) 970 Debugger(); 971 #endif 972 973 /* We return the new stack pointer address */ 974 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 975 } 976 977 #if 0 978 void 979 process_kernel_args(char *args) 980 { 981 982 boothowto = 0; 983 984 /* Make a local copy of the bootargs */ 985 strncpy(bootargs, args, MAX_BOOT_STRING); 986 987 args = bootargs; 988 boot_file = bootargs; 989 990 /* Skip the kernel image filename */ 991 while (*args != ' ' && *args != 0) 992 ++args; 993 994 if (*args != 0) 995 *args++ = 0; 996 997 while (*args == ' ') 998 ++args; 999 1000 boot_args = args; 1001 1002 printf("bootfile: %s\n", boot_file); 1003 printf("bootargs: %s\n", boot_args); 1004 1005 parse_mi_bootargs(boot_args); 1006 } 1007 #endif 1008 1009 #ifdef KGDB 1010 #ifndef KGDB_DEVNAME 1011 #define KGDB_DEVNAME "ffuart" 1012 #endif 1013 const char kgdb_devname[] = KGDB_DEVNAME; 1014 1015 #if (NCOM > 0) 1016 #ifndef KGDB_DEVMODE 1017 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 1018 #endif 1019 int comkgdbmode = KGDB_DEVMODE; 1020 #endif /* NCOM */ 1021 1022 #endif /* KGDB */ 1023 1024 1025 void 1026 consinit(void) 1027 { 1028 static int consinit_called = 0; 1029 uint32_t ckenreg = ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN); 1030 #if 0 1031 char *console = CONSDEVNAME; 1032 #endif 1033 1034 if (consinit_called != 0) 1035 return; 1036 1037 consinit_called = 1; 1038 1039 #if NCOM > 0 1040 1041 #ifdef FFUARTCONSOLE 1042 /* Check switch. */ 1043 if (0 == (ioreg_read(LUBBOCK_OBIO_VBASE+LUBBOCK_USERSW) & (1<<15))) { 1044 /* We don't use FF serial when S17=no-dot position */ 1045 } 1046 #ifdef KGDB 1047 else if (0 == strcmp(kgdb_devname, "ffuart")) { 1048 /* port is reserved for kgdb */ 1049 } 1050 #endif 1051 else if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_FFUART_BASE, 1052 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) { 1053 #if 0 1054 /* XXX: can't call pxa2x0_clkman_config yet */ 1055 pxa2x0_clkman_config(CKEN_FFUART, 1); 1056 #else 1057 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, 1058 ckenreg|CKEN_FFUART); 1059 #endif 1060 1061 return; 1062 } 1063 #endif /* FFUARTCONSOLE */ 1064 1065 #ifdef BTUARTCONSOLE 1066 #ifdef KGDB 1067 if (0 == strcmp(kgdb_devname, "btuart")) { 1068 /* port is reserved for kgdb */ 1069 } else 1070 #endif 1071 if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_BTUART_BASE, 1072 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) { 1073 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, 1074 ckenreg|CKEN_BTUART); 1075 return; 1076 } 1077 #endif /* BTUARTCONSOLE */ 1078 1079 1080 #endif /* NCOM */ 1081 1082 } 1083 1084 #ifdef KGDB 1085 void 1086 kgdb_port_init(void) 1087 { 1088 #if (NCOM > 0) && defined(COM_PXA2X0) 1089 paddr_t paddr = 0; 1090 uint32_t ckenreg = ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN); 1091 1092 if (0 == strcmp(kgdb_devname, "ffuart")) { 1093 paddr = PXA2X0_FFUART_BASE; 1094 ckenreg |= CKEN_FFUART; 1095 } 1096 else if (0 == strcmp(kgdb_devname, "btuart")) { 1097 paddr = PXA2X0_BTUART_BASE; 1098 ckenreg |= CKEN_BTUART; 1099 } 1100 1101 if (paddr && 1102 0 == com_kgdb_attach(&pxa2x0_a4x_bs_tag, paddr, 1103 kgdb_rate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode)) { 1104 1105 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, ckenreg); 1106 } 1107 #endif 1108 } 1109 #endif 1110 1111 #if 0 1112 /* 1113 * display a number in hex LED. 1114 * a digit is blank when the corresponding bit in arg blank is 1 1115 */ 1116 unsigned short led_control_value = 0; 1117 1118 void 1119 hex_led_blank(uint32_t value, int blank) 1120 { 1121 int save = disable_interrupts(I32_bit); 1122 1123 ioreg_write(LUBBOCK_OBIO_VBASE+0x10, value); 1124 led_control_value = (led_control_value & 0xff) 1125 | ((blank & 0xff)<<8); 1126 ioreg_write(LUBBOCK_OBIO_VBASE+0x40, led_control_value); 1127 restore_interrupts(save); 1128 } 1129 #endif 1130
Indexes created Thu Oct 23 22:10:10 GMT 2025